Types of Levels:
- Dumpy Level: Rigid and stable, used for general levelling work.
- Wye Level: Telescope held in “Y”-shaped supports, allowing for reversing.
- Tilting Level: Telescope tilts for precise survey work.
- Automatic Level: Uses tilt compensators for self-alignment, making it the most commonly used today.
Levelling Staffs:
- Self-reading Staff: Observed by the level operator directly.
- Solid Staff: A solid, rigid staff.
- Folding Staff: A foldable, portable staff.
- Telescopic Staff: Can be extended for use.
- Target Staff: Has a sliding target, and readings are taken by sighting the target with the level’s telescope.
